不同熟期夏玉米品种籽粒灌浆与脱水特性及其密度效应

万泽花,任佰朝,赵斌,刘鹏,董树亭,张吉旺

Grain Filling and Dehydration Characteristics of Summer Maize Hybrids Differing in Maturities and Effect of Plant Density

Ze-Hua WAN,Bai-Zhao REN,Bin ZHAO,Peng LIU,Shu-Ting DONG,Ji-Wang ZHANG

表3 不同熟期夏玉米品种的籽粒灌浆速率

Table 3 Filling rate of summer maize hybrids differing in maturities

品种 Hybrid 种植密度 Plant density (plants hm-2) 灌浆期有效积温 EATFP (°C) 生理成熟期百粒重 100-KDWPM (g) 平均灌浆速率 Average filling rate (g °C-1) 籽粒最大 含水率的百粒重 100-KDWMWC (g) 籽粒最大含水率 到成熟的灌浆速率 FRMWCM (g °C-1 ) 2016 DH518 60000 921.5 32.72 b 0.036 a 12.93 0.041 75000 916.6 30.05 de 0.033 bc 11.58 0.037 90000 916.6 29.23 ef 0.032 bc 10.34 0.038 HZ8 60000 863.1 27.87 fg 0.032 bc 11.98 0.034 75000 863.1 27.45 g 0.032 bc 11.60 0.034 90000 873.2 27.68 fg 0.032 bc 10.03 0.037 ZD958 60000 951.2 32.01 bc 0.034 b 19.51 0.033 75000 951.2 31.02 cd 0.033 bc 17.83 0.035 90000 943.4 29.57 de 0.031 c 15.33 0.037 DH605 60000 986.8 35.76 a 0.036 a 18.86 0.041 75000 975.9 35.42 a 0.036 a 17.17 0.043 90000 959.7 34.89 a 0.036 a 16.91 0.043 2017 DH518 60000 933.3 32.01 d 0.034 e 13.30 0.040 75000 933.3 30.86 def 0.033 e 12.20 0.040 90000 927.7 31.35 de 0.034 e 12.00 0.040 HZ8 60000 920.1 30.56 ef 0.033 e 12.98 0.039 75000 920.1 29.11 g 0.032 f 12.53 0.036 90000 895.0 29.69 fg 0.033 e 13.10 0.035 ZD958 60000 963.2 36.95 ab 0.038 bc 20.90 0.038 75000 963.2 34.88 c 0.036 d 20.60 0.034 90000 955.8 32.15 d 0.034 e 17.70 0.034 DH605 60000 970.0 38.21 a 0.039 ab 21.70 0.039 75000 955.8 38.12 a 0.040 a 20.80 0.041 90000 962.6 36.03 bc 0.037 cd 18.10 0.041